Added bodySegmentation.getPartsId()

[alanvww]

@shiffman @ziyuan-linn
As we discussed in ml5js/ml5-website-v02-docsify#88 & #139 , this PR is to wrap the palette in a public method called getPartsId() within the bodySegmentation. This method will return an object containing all the constants as key-value pairs, similar to the getSkeleton() method in BodyPose.

As we are removing the properties section from the model documentation page, this public method ensures that the data remains accessible to all users and aligns with the consistency of other models.

[shiffman]

Fantastic! This will go along well with #211 as well! I hope to add that soon as I will be recording a faceMesh video tutorial next.

[shiffman]

@gohai since this continues your work from #139 I thought I'd check with you to review before merging. Thank you!

[gohai]

This looks good to me @alanvww.

One stylistic nitpick: in the example, one line is missing the trailing semicolon

In #139, we added two constants to MediaPipeSelfieSegmentation as well. I am thinking it's probably best to remove them with the change now.

ml5-next-gen/src/BodySegmentation/index.js

Line 189 in aa05f67

this.BACKGROUND = 0;

[alanvww]

This looks good to me @alanvww.

One stylistic nitpick: in the example, one line is missing the trailing semicolon

In #139, we added two constants to MediaPipeSelfieSegmentation as well. I am thinking it's probably best to remove them with the change now.

ml5-next-gen/src/BodySegmentation/index.js

Line 189 in aa05f67

this.BACKGROUND = 0;

Thanks, @gohai! I’ll commit the changes soon. Regarding the constants in SelfieSegmentation, I double-check that there aren’t any current examples using them. However, even if we remove them, it might be a good idea to add more documentation about those properties? @shiffman @MOQN

[shiffman]

Looks great to me! I agree we can remove the selfie segmentation constants. Normally we might "deprecate" the property, but I did a search and they appear nowhere in the examples or documentation so I think it's good to remove.

[alanvww]

@gohai @shiffman Thanks for the reviews! I’ve just made the changes to the code format, removing the selfie segmentation constants.

[shiffman]

Fantastic work, thank you! Merging! I may have some more thoughts or questions when I get to recording a video tutorial about this, stay tuned!